Permutation lock



Sept. 24,1929: l E s oNs 1,729,019

PERMU'I'A'TION Locx Filed June 30, 1928 5 sheets-sheet 1 Inventor LEI/Simmons} zitmrm y Sept. 24, 1929.

L. E. SIMMONS PERMUTATION LOCK Filed June 30, 1928 i I \l 5 Sheets-Sheet 2 Inventor lifflz'mmama,

By 96V Attarnqy I 'Sept. '24, 1929.

L. E. SIMMONS PERMUTATION LOCK Filed June 30. 1928 3 Sheets-Sheet 4 6 a x 2 n z w J a 3 4 1 M w x 4% n m J J a v rum a m a. 5

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/ Inventor LE 5am man .5

' Attornqy Patented Sept. 24, 1929 UNITEED STA LUTHER E.

Application filed June 30, 1928.

The present invention has improved permutation lock TES PATENT OFFICE SIMMONS, OF BANCROF'I, WEST VIRGINIA I'ERMUTATION LOCK reference to an of the mortise type, such as is especially adapted for swinging doors.

Briefly described, the lock comprises a cas ing designed to fit in a mortised opening, in

the door. Tlns casing contains a spring projected latch,

operating connection with th structed to accommodate a multiple arrangement of rotary tumblers.

a slidable tumbler plate having e latch and con- The tumblers are controlled by individual indicator knobs cooperating dials. The tumbler plate is the outside of the door.

handle located on with graduated operated by a The sliding latch is operated from the outside by the tumbler plate and from the inside by an independently operable One feature of constructi handle. on is the novel sliding tumbler plate, which is arranged within the casing and has pin with the latch, whereby and slot connection to permit the latch to be operated from the inside of the door independently of the tumbler plate.

is also characterized at its inlateral abutments with which back has operating contumbler plate ner end with the oscillatory roll nection.

The

' plate,

The multiple rotary tumbler arrangement is also regarded as a novel improvement in the art, in that the operation of the tumblers may be accurately gauged by indicator knobs cooperating with graduations on the graduated dial, this structure being advantageous 1n that 1t ll'ldlI lClLidllZGS the lock and prevents opening of the lock by unauthorized persons.

An equally important feat slidably mounted ure is the inside handle which has operating connection with the latch and which is constructed for cooperation with a pivotally mounted retainer, functioning to prevent movement of the handle when desired.

In carrying out this invention, deavored to provide a mechanical I have enachievement which is characterized by dependability, eiiicient performance, selectivity in operation and other features which pernnt the structure to fulfill the requirements 0 class.

In the drawings:

f a lock of this Serial No. 289,494.

Figure 1 is an elevational view, showing the lock installed in a door and observing the structure from the outside.

Figure 2 is a View similar to Figure 1, reviewing the structure from the inside.

Figure 3 is an edge view of the door, showing the projecting parts Figure 4 is an elevatio casing removed from the Figure of the lock. nal view of the lock door.

5 1s a view based on Figure 4, ob

serving the opposite side and showing the cover plate removed to mechanism.

expose the internal Figure 6 is a horizontal sectional view through the lock lnstalled.

Figure 7 1s a transverse or vertical sectional view.

Flgure 8 is a fragmentary view, based on Figure 5, with the slidable tumbler plate removed.

Figure 9 is an inside the tumbler plate per se perspective view of Figure 10 is a perspective view of one of the tumblers.

Figure 11 is a perspective view of the spindle.

Figure 12 is a perspective View of a keeper such as is mounted upon the door frame.

Asbefore intimated, the structure embodies a casing which in this instance is substantially rectangular in construction.

casing is seen better in Figure 5,

configuration and hollow in The body portion 13 of the wherein it will be observed that it is provided with the usual end flanges otherwise fastened 14, which are screwed or to the edge of thedoor 15 as shown in Figure 3. Located in this portion of the casing is the slidable latch 16, (see Figure 8) which is normally forced outward- This is disposed in sliding contact with the bolt 16 and is provided with an elongated slot 20, at its forward en d through which the under the action of the spring 17 suitably Cir pin 18 projects. The outer surface "of this tumbler plate is provided with circular sockets or depressions 21 which are in communication with each other as at 22. The outer de pression also communicates with a groove 23. The inner end of the tumbler plate is bifurcated and the furcations are provided with right angularly directed extensions or fingers 24, (see Figure 9) which cooperate with j the oscillatory roll back 25, (see Figure 5). The body portion of the roll back is located between the furcations and carries oppositely projecting actuators 27 which engage the lingers 24. The roll back is of course, mounted for oscillation in the casing, and in this instance is formed with a polygonal opening for reception of the correspondingly shaped spindle 28, carried by the shank 29 of the outside handle 30, (see Figure 7). Thus, the handle can be turned in either direction to rock the roll back and in turn to slide the tumbler plate inwardly. Since the pin 18 is located in the forward end of the slot 20, it is obvious that this motion will withdraw the latch. 16. The latch, however, has independent sliding motion from the inside of the door. inside operation is accomplished through the use of a substantially U-shaped handle 31, which is arranged asshown in Figure 6. As

is apparent here, the arm portions of the handle are provided with outwardly extending feet 32, in sliding contact spacing plate 33. The spacing plate is slotted and a handle 31 carries small headed fastenings 34L movable in the slot. The forward foot 32 is provided with a socket receiving a right angularly projecting stud 35, on one side of the latch, it being noted that in this connection, the body 13 is formed with openings to accommodate the projecting portions on the latch. It is therefore obvious that by grasping the handle 31 and sliding it inwardly, the latch will be withdrawn and moved independently of the tumbler plate 20. It is possible, however, to retain the handle 31 against movement through the utilization of a small pivoted ret ainer 36, mounted on the spacing plate 33 and occupying the position as better shown in Figure 2. This retainer has its free end portion so shaped as to engage an adjacent arm of the handle 31, as is shown in Figure 2, and when thus positioned, the handle cannot be moved. This permits the door to be locked from the inside. Attention is now invited to the construction and arrangement of the multiple rotary tumbler assembly which is employed to lock the tumbler plate from the outside but to permit it to be released for operation by the handle when so desired.

I employ two tumblers 37 of the construction shown in Figure 10. As seen here, the head of the tumbler is of general T-shaped construction as indicated at 38 and the stem 39 is of polygonal cross sectional shape. Thus, the head portion of the tumbler is The adapted for reception in the aforesaid depression 21 in the tumbler plate. It is obvious, however, that when the tumblers are in the position seen in Figure 5, the tumbler plate 20 cannot be manipulated. However, by turning the tumblers so that the leg portions register with the grooves 22 and 23 respectively, it is obvious that the tumbler plate can then be manipulated by turning the handle 30 in eitherdirection.

In accordance with the invention, these tumblers are cooperable with graduated dials 40 on the outside facing plate d1, as seen in Figure 1. It will be noted also that the stem portion 39 of the tumblers extend out through openings in the casing cover plate 12, and two additional openings in the facing plate 411. The extended portions carry knurled finger grips or knobs 13, (see Figures 3 and 6). Then, as better shown in Figure 1, each knob is provided with a pointer 1 1, adapted to cooperate with the graduations on the dial. The arrangement is such that the pointer must be opposite a predetermined graduation on the dial before the tumbler plate 20 is released.

The final detail to be mentioned is the keeper plate 4:5, seen in Figure 12. This, however, is of ordinary construction, and as usual is mounted on the door frame 16. This is of no consequence, in so far as the novelty of this invention is concerned.

I claim:

1. A look of the class described comprising a casing, a latch slidable in the casing, an inside handle for operating the latch, a sliding plate in the casing in slidable contact with the latch, an oscillatory roll back in the casing having an operating connection with the sliding plate, and an outside operating handle for said roll back, said sliding plate having a depression, a tumbler located in the depression, and operating means i for the tumbler.

2. A permutation lock of the mortise type comprising a hollow casing, a spring protect-ed latch slidably mounted in the casing, an inside handle having operating connection with said latch, a pivoted retainer for said handle a tumbler plate slidably mounted in the casing and in sliding contact with the latch, an outside handle having operating connection with said tumbler plate, said tumbler plate being formed in its outer surface with a depression, a rotary T-shaped tumbler located in the depression and provided with outstanding inturned stem, and a knob carried by the stem.

3. A permutation lock of the mortise type comprising a hollow casing, a spring protected latch slidably mounted in the casing, an inside handle having operating connection with said latch, a pivoted retainer for said handle, a tumbler plate slidably mounted in the casing and in sliding contact with the latch, an outside handle having operating connection with said tumbler plate, said tumbler plate being formed in its outer surface with a depression, a rotary T-shaped tumbler located in the depression and provided with outstanding inturned stem, and a knob carried by the stem,together with an outside facing plate disposed against the outer surface of said casing and interposed between said outside handle and knob, said facing plate being provided with a graduated dial, and said knob having a pointer cooperating with said dial to indicate the position of the tumbler.

4. A permutation lock of the mortise type comprising a hollow casing, a spring projected latch slidably mounted in the casing, an inside facing plate for the casing, a substantially U-shaped handle slidably mounted on said facing plate and having operating connection with said latch, a pivoted retainer carried by said inside facing plate and engageable with said handle, and exteriorly disposed operating means for said latch.

5. A permutation lock of the mortise type comprising a hollow casing, a spring projected latch slidably mounted in the casing, an inside facing plate for the casing, a substantially U-shaped handle slidably mounted on said facing plate and having operating connection with said latch, a pivoted retainer carried by said inside facing plate and engageable with said handle, and exteriorly disposed operating means for said latch, said eXteriorly disposed means having pin and slot connection with the latch whereby to permit the latch to be independently operated from the inside by the inside handle.

In testimony whereof I affix my signature.

LUTHER E. SIMMONS. 

